Use shared D3D9 texture to transport the compositor's backing buffer to the browser...

content/browser/renderer_host/render_widget_host_view.h

Index: content/browser/renderer_host/render_widget_host_view.h
===================================================================
--- content/browser/renderer_host/render_widget_host_view.h	(revision 108480)
+++ content/browser/renderer_host/render_widget_host_view.h	(working copy)
@@ -26,6 +26,8 @@
 #include "ui/gfx/rect.h"
 #include "ui/gfx/surface/transport_dib.h"
 
+struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
+
 namespace gfx {
 class Rect;
 class Size;
@@ -189,6 +191,15 @@
   // Allocate a backing store for this view
   virtual BackingStore* AllocBackingStore(const gfx::Size& size) = 0;
 
+  // |window| and |surface_id| indicate which accelerated surface's
+  // buffers swapped. |renderer_id| and |route_id| are used to formulate
+  // a reply to the GPU process to prevent it from getting too far ahead.
+  // They may all be zero, in which case no flow control is enforced;
+  // this case is currently used for accelerated plugins.

[jonathan.backer, 2011/11/03 23:09:07]

nix the comment?

+  virtual void AcceleratedSurfaceBuffersSwapped(
+      const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
+      int gpu_host_id) = 0;
+
 #if defined(OS_MACOSX)
   // Tells the view whether or not to accept first responder status.  If |flag|
   // is true, the view does not accept first responder status and instead
@@ -244,17 +255,6 @@
       int32 width,
       int32 height,
       TransportDIB::Handle transport_dib) = 0;
-  // |window| and |surface_id| indicate which accelerated surface's
-  // buffers swapped. |renderer_id| and |route_id| are used to formulate
-  // a reply to the GPU process to prevent it from getting too far ahead.
-  // They may all be zero, in which case no flow control is enforced;
-  // this case is currently used for accelerated plugins.
-  virtual void AcceleratedSurfaceBuffersSwapped(
-      gfx::PluginWindowHandle window,
-      uint64 surface_id,
-      int renderer_id,
-      int32 route_id,
-      int gpu_host_id) = 0;
   virtual void GpuRenderingStateDidChange() = 0;
 #endif
 
@@ -264,10 +264,6 @@
       int32 height,
       uint64* surface_id,
       TransportDIB::Handle* surface_handle) = 0;
-  virtual void AcceleratedSurfaceBuffersSwapped(
-      uint64 surface_id,
-      int32 route_id,
-      int gpu_host_id) = 0;
   virtual void AcceleratedSurfaceRelease(uint64 surface_id) = 0;
 #endif